Jar closure



Patentd Mar. 28, 1922.

INVENTOR. ANTON! w. KROWKK! ATTORNEYS UNITED STATES PATENT OFFIE.

JAR CLOSURE.

Specification of Letters Patent. Patented D131. 28, 1922.

Application filed September 28, 1920. Serial No. 413,293.

1 0 all whom, it may concern:

Be it known that I, ANTONI Knowioni, a citizen of the United States, and resident of San Francisco, county of San Francisco, State of Galiiornia, have invented a new and useful Jar Closure, of which. the following is a specification.

My invention, while relating in general to jar closures, has reference more particularly, at least so far as concerns, the present illustrative embodiment, to a liquid seal for the cap closures of primary battery jars.

An object of the invention, is to so construct the seal that any gases which may be generated within the jar may readily pass through the seal into the atmosphere and at the same time provide an effective seal to prevent air from obtaining access to the interior of the ar.

A further object of the invention is to provide means to oflsetthe likelihood of any of the liquid within the jar from becoming mixed with the liquid in the sealing chan nel, for instance, should there be a slight precipitation on the underside of the cap closure, such precipitation will be directed or returned by a drip flange or ring back into the jar, instead of permitting the same to trickle into the liquid seal.

A still further object oi the invention is to provide a seal of: the character described which will be extremely cheap to make and capable of carrying out its intended use with the greatest efliciency.

In the accompanying drawing Figure l. is a vertical section of a battery 'ar'oquipped with the invention; Figure is an elevation with a portion of the side out the jar broken away to show the liquid channel oi. the seal in cross section and Figure 3 is broken away perspective view of the cap closure turned upside down to show the underside.

Referring to the drawing in detail 5 represents the ar which may be produced from any suitable material, arranged on the outside of the open end is the liquid channel of the seal, consisting of a relatively narrow trough 6 which extends around the jar and made to receive the downwardly presented flange 7 of the cap closure 8. Positioned on the underside of the cap closure 8 is an annular drip flange 9 which is spaced from the flange 7 with the space between these two parts adapted to be occupied by the edge 10 of the ar.

As seen in Figure l the edge of the flange 7 rests upon the bottom of the liquid channel and the edge 10 of the jar abuts against the underside of the cap closure. To permit the escape of gases which may be generated within the jar the edge 10 of the jar is notched out at spaced intervals such as at 11 and the edge of the flange 7 is notched out as at 12.

7 Any moisture which may be precipitated on'the underside of the cap closure will be directed or returned to the liquid in the jar by the ring 9 should it trickle toward the seal.

Any suitable liquid may be used with the trough 6 and the cap closure need not be fastened down as the weight of the customary electrodes A and B which are carried by the cap closure will hold the same in place.

I claim:

A jar embodying in its construction, a liquid channel arranged on the outside of its body portion and adjacent the open end thereof, a cap closure having a downwardly presented. flange adapted to be seated in said channel, with the cap resting upon the edge oi? the jar, said jar edge and the edge of said downwardly presented flange being notched out at spaced intervals, and a drip flange on the underside of the oapclosure adapted to extend within the jar parallel to the first named. flange.

' ANTONI VY. KROWIO'KI. 

